<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        html, body, ul, li, ol, dl, dd, dt, p, h1, h2, h3, h4, h5, h6, form, fieldset, legend, img, input, figure, figcaption {
            margin: 0;
            padding: 0;
        }

        h1, h2, h3, h4, h5, h6 {
            font-size: 16px;
            font-weight: normal;
        }

        ul, ol, li {
            list-style: none;
        }

        b, strong {
            font-weight: normal;
        }

        em, i {
            font-style: normal;
        }

        a, u {
            text-decoration: none;
        }

        img {
            border: 0;
            display: block;
        }

        input {
            outline: none;
        }

        * {
            box-sizing: border-box;
        }

        .box {
            width: 214px;
            height: 108px;
            margin: 30px auto;
            position: relative;
        }

        .inner {
            width: 214px;
            height: 108px;
            border: rgba(0, 0, 0, .2) solid 1px;
        }

        .hidde {
            opacity: 0;
            width: 214px;
            height: 108px;

            text-align: center;
            line-height: 108px;
            font-size: 24px;
            position: absolute;
            left: 0;
            top: 0;
            transition: 0.7s;
        }

        .hidde:after {
            position: absolute;
            top: -1px;
            content: '';
            display: block;
            width: 0;
            height: 0;
            border: #c69c6d solid 1px;
            transition: width 0.4s linear;
        }

        .hidde:before {
            position: absolute;
            bottom: -1px;
            content: '';
            display: block;
            width: 0;
            height: 0;
            border: #c69c6d solid 1px;
            transition: width 0.4s linear;
        }

        .box:hover .hidde {
            opacity: 1;
            background-color: #fff;

        }

        .box:hover .hidde:after, .box:hover .hidde:before {
            width: 210px;

        }

        .lar {

            width: 214px;
            height: 108px;
            position: absolute;
            left: 0;
            top: 0;
        }

        .lar:after {

            content: '';
            display: block;
            width: 0;
            height: 0;
            border: #c69c6d solid 1px;
            transition: height 0.4s linear;
            position: absolute;
            left: 0px;
        }

        .lar:before {
            content: '';
            display: block;
            width: 0;
            height: 0;
            border: #c69c6d solid 1px;
            transition: height 0.4s linear;
            position: absolute;
            right: 0px;
        }

        .box:hover .lar:after, .box:hover .lar:before {
            height: 107px;

        }
    </style>
    <link rel="stylesheet" href="src/css/style.css">
</head>
<body>

<div class="box">
    <div class="inner">
        <img src="src/images/bj-1.png" height="108" width="214"/>
    </div>
    <div class="hidde">
        宝玑
        <div class="lar">

        </div>
    </div>
</div>

</body>
</html>